butyl Bicycle tire tube 1.A/V.E/V.D/V ... & competitive price 3.Manufacture directly 4.OEM butyl Bicycle tire tube (rubber tube and butyl tube ) 1. A/V , E/V D ... many kinds of high quality bicycle tyre and tube .Inlcude the natural rubber tube and butyl tube ,Our products are exported ... CHILE ,BOIVIA, ARGENTINA.Australia NEW-ZEALANDMAIN PRODUCTS SIZES Racing tube 700x23c, 700x35c,28”: 28X1.5, 28x1-5/8x1-3 ...